... Auxiliary Agent CAS No.: 1333-86-4 Other Names: carbon black MF: C Purity: 99 Place of Origin: J carbon ... N330 N550 N660 N3750 We supply diverse model carbon black, for example N220, N330, N550, N660, N339, etc. 1. Type: ... -43. Place of origin: china4. Standard: GB 3778-20035. Form: black granule or powder6.Process: wet or dry process7. Usage: maily ...